TC1221 Datasheet, PDF (9/16 Pages) Microchip Technology – High Frequency Switched Capacitor Voltage Converters with Shutdown in SOT Packages

TC1221/TC1222
5.0 TYPICAL CHARACTERISTICS
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein are
not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Circuit of Figure 4-3, V_IN = +5V, C1 = C2 = C3, T_A = 25°C unless otherwise noted.
TC1221 Supply Current vs. Supply Voltage
350
C1 = C2 = C3 = 1µF,
300 RL = ∞, +25°C
250
200
150
100
50
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
TC1221 Output Resistance vs. Supply Voltage
65
60
C1 = C2 = C3 = 1µF, +25°C
55
50
45
40
35
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
300
250
200
150
100
50
0
0
TC1221 Output Voltage Ripple
vs. Capacitance, C₂
V_IN = 3.3V, RL = 1K, +25°C
V_IN = 5.0V, RL = 1K, +25°C
V_IN = 5.0V
V_IN = 3.3V
5
10
15
CAPACITANCE (µF)
600
500
400
300
200
100
0
0
TC1221 Output Voltage Droop
vs. Capacitance, C₁ = C₂
V_IN = 3.3V, RL = 1K, +25°C
V_IN = 5.0V, RL = 1K, +25°C
V_IN = 5.0V
V_IN = 3.3V
5
10
15
CAPACITANCE (µF)
TC1221 Oscillator Frequency
vs. Supply Voltage
130
C1 = C2 = C3 = 1µF,
RL = ∞, +25°C
120
110
100
90
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
 2002 Microchip Technology Inc.
DS21367B-page 9